Missouri Coverage
The Confluence Duck Migration Forecast
B.K. Leach, Marais Temps Clair and Columbia Bottom where the Missouri meets the Mississippi. Heavy pressure, but the open river keeps birds here after the marshes lock.
See today’s live scoreAll of MO
Season dates: Missouri duck season 2026-27, dates and migration timing
Where The Confluence is
The Confluence is drawn from 8 counties in Missouri: Franklin, Jefferson, Lincoln, Montgomery, St. Charles, St. Louis City, St. Louis County and Warren. Those are the counties its shape on the DuckCast map is built from, so a hunter in any of them reads this region’s score.
When The Confluence peaks
DuckCast’s season model puts the mallard peak here around early December. This follows the statewide mallard curve. That is a modelled typical curve, not a prediction for any single year. The actual push depends on cold fronts and freeze-up upstream, which is what the daily score tracks. Always confirm season dates with the state wildlife agency, linked below.
What DuckCast watches upstream of The Confluence
4 upstream stations feed this region's freeze line, nearest first: Havana, IL, about 115 miles north, Muscatine, IA, about 190 miles north, Spring Valley, IL, about 200 miles northeast and Savanna, IL, about 235 miles north. When those stations ice over, the score here starts climbing before anything changes in the local sky.
Radar over The Confluence
Each morning DuckCast reads the night’s NEXRAD data from KLSX, the National Weather Service radar at St. Louis, about 4 miles east of the region’s weather point. That is close enough for the radar to sample the air over the region itself. Radar sees every bird in the air, not only ducks, so it confirms or questions the score rather than moving it.
Locations stay generalized
Hunter reports for The Confluence are always shown at the region level. DuckCast never collects or displays exact coordinates, so filing a report here never burns a spot.
Also covered in Missouri
Nearest first. Distances run between the regions’ weather points.
- Northeast and the Upper Mississippi, about 100 miles northwest
- Mingo Basin, about 105 miles south
- Missouri River Valley, about 110 miles west
- The Ozarks, about 115 miles southwest
- The Bootheel, about 155 miles southeast
- North Missouri, about 160 miles northwest
- West Central and the Osage, about 165 miles west
- Northwest Missouri, about 235 miles west
Season dates and regulations change. Always verify with Missouri Department of Conservation. DuckCast forecasts conditions, not legal seasons.